Caster yoke for manufacture of a set of wheeled caster assemblies

ABSTRACT

A caster yoke for use in the manufacture of a set of wheeled caster assemblies. Each wheeled caster assembly of the set of wheeled caster assemblies has unique functional capabilities relative to each other wheeled caster assembly of the set, which unique functional capabilities arise from a respective combination of one or more caster components mounted on the caster yoke. The caster yoke has all of the mounting features necessary to selectively mount all of the respective caster components of the set of wheeled caster assemblies on the caster yoke. In this manner, the same caster yoke may be used without modification of its structure as a key structural component common to the entire set of wheeled caster assemblies thereby significantly reducing production and inventory costs for the set of caster assemblies.

TECHNICAL FIELD

The present invention relates to the field of wheeled caster assemblies and more particularly, according to one aspect of the invention, to a caster yoke that can be used to manufacture a set of wheeled caster assemblies with each member of the set having unique functional capabilities, all without the need to modify the caster yoke.

BACKGROUND OF THE INVENTION

Wheeled caster assemblies are generally well known in the art. Such wheeled casters are attached to a base or to the bottom of an object such as a bed, a stretcher, a gurney, a chair, a large piece of medical diagnostic equipment, a palette, a wagon, a cart, and the like. Wheeled caster assemblies are configured to provide translation (rolling movement) of the object along a surface or the ground (once attached to the object just so). In some configurations, the wheel(s) of the caster assembly may be fixed in a single orientation relative to the attached object to provide motion in a single forward and backward direction. In other configurations, the caster assembly includes a swivel that allows the caster assembly to rotate about a vertical axis. If all caster assemblies attached to the object are of this configuration, the object to which the caster assembly is attached is able to move in a lateral as well as a forward and backward motion. Different configurations are also well known with combinations of fixed and swivel-enabled caster assemblies attached to a single object.

Wheel brake and swivel brake assemblies for casters are also well known and have been provided in a variety of forms for many years. A wheel brake assembly is typically used to stop the motion of the wheel, such that the wheel is no longer able to rotate about a respective wheel axis. Wheel brake assemblies are often engaged when a user wishes the object to remain in a fixed position. If the caster assembly has a swivel function, the object may still be able to rotate about the wheel-braked caster assembly eventhough the wheel itself is not able to rotate.

Similarly, swivel brake assemblies have been designed to lock a swivel-enabled caster assembly in a fixed orientation such that the caster assembly is unable to swivel about the vertical axis. Swivel brake assemblies are commonly used when a user wishes to translate the object in a fixed direction, such as forward or backwards relative to the object, without having to exert the additional effort to steer. As only the swivel has been affected, the wheel of the caster assembly is still free to rotate about the wheel axis. Furthermore, objects having fixed caster assemblies oriented in the same direction will generally travel in a straight line.

Finally, a combination of a wheel brake and swivel brake assemblies in a caster assembly are known to simultaneously engage a wheel brake and a swivel brake using a single stopping actuator. With such a single actuator, the user is able with a single motion able to stop both the rotation of the caster assembly's wheel about the wheel axis and to stop the rotation of the swivel about the vertical axis.

While various combinations of these wheel and swivel brake assemblies and their associated functionalities are required in the art, each combination typically presents a challenge to combine together into a caster assembly that meets the space, actuation and service requirements of modern equipment manufacturers who incorporate caster assemblies into their products. As a result, it is required, in many cases, to custom design the various components of a caster assembly to meet the unique functional requirements of such manufacturers. That is, for example, a wheeled caster assembly required to have both a wheel brake lock assembly and a fixed-direction swivel lock assembly will, in the prior art, be constructed from caster components that may be significantly different than the caster components used to construct a unique caster assembly configuration having all three of a wheel brake lock assembly, a fixed-direction swivel lock assembly and a full-directional swivel lock assembly.

One prior art wheeled caster assembly having caster components used to construct a unique caster configuration having a wheel brake lock assembly, a fixed-direction swivel lock assembly, and a full-directional swivel lock assembly is disclosed in U.S. Pat. No. 8,424,158 (Steenson), which patent is hereby incorporated by reference. The wheeled caster assembly disclosed in U.S. Pat. No. 8,424,158 includes a caster yoke and a cam assembly operable in at least three operational (functional) states (modes). The cam assembly may include an actuating mechanism for operating the cam assembly, a swivel lever mechanism and a brake lever mechanism in communication with a cam. When in a first operational (functional) state (mode), the wheel rotates freely and the caster yoke swivels freely. When in a second operational (functional) state (mode), a first swivel brake is engaged by the swivel lever mechanism to lock the caster yoke in a predetermined orientation while the wheel is allowed to rotate freely. When in a third operational (functional) state (mode), a wheel brake is engaged by the brake lever mechanism to stop the wheel from rotating freely, and a second swivel brake is simultaneously engaged to stop the caster yoke from swivelling. While operatively effective in its various operational (functional) states (modes), it will be appreciated by those skilled in the art that the Steenson prior art caster assembly is both complex and expensive to manufacture. Most importantly, such high levels of complexity and expense cannot be justified for many applications where less operational (functional) states (modes) are required. Moreover, the Steenson prior art caster assembly is not readily adaptable to the production of caster assemblies having less operational (functional) states (modes) without extensive redesign of the various caster components utilized therein and of the associated tooling, facilities and other resources necessary to produce assemble and inventory such components. As a consequence, in order for a caster manufacturer to be able to offer its customers a full model line (set) of casters capable of offering all of the three different operational (functional) capabilities described above in their various combinations and permutations, it would be necessary for such manufacturer to construct and inventory as many as 9 different unique caster models, each having a plurality of parts unique to each model of the line (set).

Reducing the cost of manufacturing wheeled caster assemblies having different functionalities and inventorying the numerous different castor components used in their production represents an ongoing challenge for manufacturing efficiencies in response to continuing customer demands for reduced costs. Accordingly, there remains a need in the art for an improved and more economical wheeled caster assembly that may be produced from common caster components and that may be assembled in selected combinations to form a set of wheeled caster assemblies each having unique operational (functional) capabilities.

SUMMARY OF THE INVENTION

It will be appreciated that there exists a need to mitigate (at least in part) at least one problem associated with existing wheeled caster assemblies. After much study of the known systems and methods with experimentation, and an understanding of the problem, its solution has been identified and is articulated hereinbelow.

To mitigate, at least in part, one or more problems associated with prior art wheeled caster assemblies, there is provided in accordance with an aspect of the present invention a novel and unobvious form of caster yoke, which caster yoke may be used to manufacture a complete set of wheeled caster assemblies, with each wheeled caster assembly of the set having unique functional capabilities, either alone or in combination with other unique functional capabilities, relative to each other wheeled caster assembly of the set. Each of these functional capabilities arises, in turn, from respective configurations of castor components being mountable on the caster yoke, with the caster yoke having all of the mounting features necessary to selectively mount all of the caster components of the set of wheeled caster assemblies on the caster yoke.

To mitigate, at least in part, at least one problem associated with existing wheeled caster assemblies, there is provided in accordance with another aspect of the present invention a caster yoke. The caster yoke is for constructing a set of wheeled caster assemblies. Each wheeled caster assembly of the set of wheeled caster assemblies has a unique functional capabilities relative to each other. The caster yoke includes (and is not limited to) mounting features. The mounting features are each (each mounting feature is) configured to selectively mount respective caster components of wheeled caster assemblies of the set of wheeled caster assemblies.

To mitigate, at least in part, at least one problem associated with existing wheeled caster assemblies, there is provided (in accordance with another aspect of the present invention a caster yoke for constructing a set of wheeled caster assemblies. For instance, the set of wheeled caster assemblies has (and is not limited to): (A) a first wheeled caster assembly including (and not limited to) a first caster component; (B) a second wheeled caster assembly including (and not limited to) a second caster component; and, (C) a third wheeled caster assembly including (and not limited to) a third caster component. The first wheeled caster assembly, the second wheeled caster assembly, and the third wheeled caster assembly each have unique functional capabilities relative to each other (once the caster yoke is deployed therein). The caster yoke includes (and is not limited to): a first mounting feature, a second mounting feature, and a third mounting feature. The first mounting feature is configured to selectively mount the first caster component of the first wheeled caster assembly. The second mounting feature is spaced apart from the first mounting feature. The second mounting feature is configured to selectively mount the second caster component of the second wheeled caster assembly. The third mounting feature is spaced apart from the first mounting feature and also from the second mounting feature. The third mounting feature is configured to selectively mount the third caster component of the third wheeled caster assembly. The set of wheeled caster assemblies includes (and is not limited to) a caster yoke, a first wheeled caster assembly, a second wheeled caster assembly, and a third wheeled caster assembly. The caster yoke includes (and is not limited to) a first mounting feature, a second mounting feature, and a third mounting feature. The second mounting feature is spaced apart from the first mounting feature. The third mounting feature is spaced apart from the first mounting feature and also from the second mounting feature. The first wheeled caster assembly includes (and is not limited to) a first caster component configured to selectively mount the first mounting feature of the caster yoke. The second wheeled caster assembly includes (and is not limited to) a second caster component configured to selectively mount the second mounting feature of the caster yoke. The third wheeled caster assembly includes (and is not limited to) a third caster component configured to selectively mount the third mounting feature of the caster yoke. The first wheeled caster assembly, the second wheeled caster assembly, and the third wheeled caster assembly each having unique functional capabilities relative to each other.

Other aspects of the invention are identified in the claims.

Other aspects and features of the non-limiting embodiments may now become apparent to those skilled in the art upon review of the following detailed description of the non-limiting embodiments with the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

The non-limiting embodiments may be more fully appreciated by reference to the following detailed description of the non-limiting embodiments when taken in conjunction with the accompanying drawings, in which:

FIGS. 1A, 1B and 1C (SHEETS 1 TO 3 OF 16 SHEETS) depict perspective views of embodiments of a set of wheeled caster assemblies having a first wheeled caster assembly (depicted in FIG. 1A), a second wheeled caster assembly (depicted in FIG. 1B), and a third wheeled caster assembly (depicted in FIG. 1C);

FIGS. 2A, 2B, 2C, 2D and 2E (SHEETS 4 TO 8 OF 16 SHEETS) depict different views of a caster yoke commonly deployed with (used in the construction of) any one of the first wheeled caster assembly, the second wheeled caster assembly and the third wheeled caster assembly of FIGS. 1A, 1B and 1C. FIG. 2A depicts a front perspective view. FIG. 2B depicts a side view. FIG. 2C depicts a rear perspective view. FIG. 2D depicts a bottom perspective view. FIG. 2E depicts a top view.

FIGS. 3A to 3D (SHEETS 9 TO 12 OF 16 SHEETS) depict views of the first wheeled caster assembly of FIG. 1A which includes the caster yoke of FIGS. 2A, 2B, 2C, 2D and 2E;

FIGS. 4A and 4B (SHEETS 13 AND 14 OF 16 SHEETS) depict views of the second wheeled caster assembly of FIG. 1B, and the second wheeled caster assembly includes the caster yoke of FIGS. 2A, 2B, 2C, 2D and 2E. FIG. 4A depicts an exploded view. FIG. 4B depicts a side view;

FIGS. 5A and 5B (SHEETS 15 AND 16 OF 16 SHEETS) depict views of embodiments of the third wheeled caster assembly of FIG. 1C, and the third wheeled caster assembly includes the caster yoke of FIGS. 2A, 2B, 2C, 2D and 2E. FIG. 5A depicts an exploded view. FIG. 5B depicts a side view.

The drawings are not necessarily to scale and may be illustrated by phantom lines, diagrammatic representations and fragmentary views. In certain instances, details unnecessary for an understanding of the embodiments (and/or details that render other details difficult to perceive) may have been omitted.

Corresponding reference characters indicate corresponding components throughout the several figures of the drawings. Elements in the several figures are illustrated for simplicity and clarity and have not been drawn to scale. The dimensions of some of the elements in the figures may be emphasized relative to other elements for facilitating an understanding of the various disclosed embodiments. In addition, common, but well-understood, elements that are useful or necessary in commercially feasible embodiments are often not depicted to provide a less obstructed view of the embodiments of the present disclosure.

LISTING OF REFERENCE NUMERALS USED IN THE DRAWINGS

101 first mounting feature

102 second mounting feature

103 third mounting feature

104 fourth mounting feature

105 fifth mounting feature

106 sixth mounting feature

107 seventh mounting feature

108 eighth mounting feature

109 ninth mounting feature

110 tenth mounting feature

111 eleventh mounting feature

112 caster yoke

300 first wheeled caster assembly

301 first caster component

302 second caster component

303 third caster component

304 fourth caster component

305 fifth caster component

306 sixth caster component

307 seventh caster component

308 eighth caster component

309 ninth caster component

310 tenth caster component

311 eleventh caster component

312 twelfth caster component

313 thirteenth caster component

314 fourteenth caster component

315 fifteenth caster component

316 sixteenth caster component

317 seventeenth caster component

318 eighteenth caster component

319 nineteenth caster component

320 twentieth caster component

321 twenty-first caster component

322 twenty-second caster component

323 twenty-third caster component

324 twenty-fourth caster component

325 twenty-fifth caster component

326 twenty-sixth caster component

327 twenty-seventh caster component

328 twenty-eighth caster component

400 second wheeled caster assembly

401 first caster component

402 second caster component

403 third caster component

404 fourth caster component

405 fifth caster component

406 sixth caster component

407 seventh caster component

408 eighth caster component

409 ninth caster component

410 tenth caster component

411 eleventh caster component

412 twelfth caster component

413 thirteenth caster component

500 third wheeled caster assembly

501 first caster component

502 second caster component

503 third caster component

504 fourth caster component

505 fifth caster component

506 sixth caster component

507 seventh caster component

508 eighth caster component

509 ninth caster component

510 tenth caster component

511 eleventh caster component

DETAILED DESCRIPTION OF THE NON-LIMITING EMBODIMENT(S)

The following detailed description is merely exemplary and is not intended to limit the described embodiments or the application and uses of the described embodiments. As used, the word “exemplary” or “illustrative” means “serving as an example, instance, or illustration.” Any implementation described as “exemplary” or “illustrative” is not necessarily to be construed as preferred or advantageous over other implementations. All of the implementations described below are exemplary implementations provided to enable persons skilled in the art to make or use the embodiments of the disclosure and are not intended to limit the scope of the disclosure. The scope of the invention is defined by the claims. For the description, the terms “upper,” “lower,” “left,” “rear,” “right,” “front,” “vertical,” “horizontal,” and derivatives thereof shall relate to the examples as oriented in the drawings. There is no intention to be bound by any expressed or implied theory in the preceding Technical Field, Background, Summary or the following detailed description. It is also to be understood that the devices and processes illustrated in the attached drawings, and described in the following specification, are exemplary embodiments (examples), aspects and/or concepts defined in the appended claims. Hence, dimensions and other physical characteristics relating to the embodiments disclosed are not to be considered as limiting, unless the claims expressly state otherwise. It is understood that the phrase “at least one” is equivalent to “a”. The aspects (examples, alterations, modifications, options, variations, embodiments and any equivalent thereof) are described regarding the drawings. It should be understood that the invention is limited to the subject matter provided by the claims, and that the invention is not limited to the particular aspects depicted and described.

FIGS. 1A, 1B and 1C depict views of embodiments of a set of wheeled caster assemblies having a first wheeled caster assembly 300 (depicted in FIG. 1A), a second wheeled caster assembly 400 (depicted in FIG. 1B), and a third wheeled caster assembly 500 (depicted in FIG. 1C). FIG. 1A depicts a perspective view. FIG. 1B depicts a perspective view. FIG. 1C depicts a perspective view.

The first wheeled caster assembly 300, the second wheeled caster assembly 400, and the third wheeled caster assembly 500 are members of the set of wheeled caster assemblies. Each of the first wheeled caster assembly 300, the second wheeled caster assembly 400, and the third wheeled caster assembly 500 includes a caster yoke 112, which is depicted in any one of FIGS. 2A to 2E. The caster yoke is preferably formed (from a metal alloy, for instance) as a unitary body. The caster yoke 112 is a common element of (deployed in) each member of the set of wheeled assemblies. A technical effect (result or benefit) of using the same caster yoke 112 to form a set of wheeled caster assemblies is a reduction, at least in part, in the cost of manufacturing any one of the first wheeled caster assembly 300, the second wheeled caster assembly 400, and the third wheeled caster assembly 500 using different caster yokes, as is the custom in the prior art.

It will be appreciated that by allowing selected wheeled-caster components to be selectively mounted on the same caster yoke structure 112, various types of wheeled-caster structures having corresponding wheeled-caster functions may be constructed. Such functions may include, without limitation, wheel braking to stop the rotation of the wheel(s) of the caster assembly about its rotational axis, and swivel braking to allow the caster assembly to selectively rotate about a vertical axis.

Thus, by using utilizing the same caster yoke 112 for different types of wheeled caster assemblies, the cost of manufacturing these different types of wheeled caster assemblies (such as, the first wheeled caster assembly 300 depicted in FIG. 3A, the second wheeled caster assembly 400 depicted in FIG. 4A, and the third wheeled caster assembly 500 depicted in FIG. 5A) may be reduced (at least in part), since these wheeled caster assemblies share the same form of caster yoke 112. By deploying the same form of caster yoke 112 in each of the different wheeled caster assemblies, each of the wheeled caster assemblies does not need a separately designed and constructed (and stocked) caster yoke, which caster yoke is a key component in the construction of wheeled caster assemblies and potentially the largest, heaviest and most expensive component of each such caster assembly. Accordingly, the caster yoke 112 permits unique functional capabilities for different sorts of wheeled caster assemblies (depending on the functionality desired for a particular wheeled caster assembly). In this manner, the caster yoke 112 may be deployed to construct a set of wheeled caster assemblies that has a relatively large number of possible wheeled-caster functions. It will be appreciated that by changing the structure (using selected wheeled-caster components) to be attached (fixed) to (mounted on) the caster yoke 112, various types of wheeled-caster structures having corresponding wheeled caster functions can be selectively constructed (manufactured). Alternatively, the caster yoke 112 may be deployed in a wheeled caster assembly that has a relatively few number of wheeled-caster functions (such as a single wheeled-caster function), if so desired.

The first wheeled caster assembly 300, the second wheeled caster assembly 400 and the third wheeled caster assembly 500 are configured to be selectively attached (coupled, fixedly attached either directly or indirectly) to an object (known and not depicted) once selectively connected to the underside of the object. In this manner, the first wheeled caster assembly 300, the second wheeled caster assembly 400 and the third wheeled caster assembly 500 are configured to enable the object to be moved (along a working surface). Embodiments of the object include (and are not limited to) a bed, a stretcher, a gurney, an office chair, a large piece of medical diagnostic equipment, a palette, a wagon, a cart, and the like.

The first wheeled caster assembly 300, the second wheeled caster assembly 400, and the third wheeled caster assembly 500 preferably each have unique functional capabilities relative to each other.

In accordance with a first major aspect (as depicted in FIGS. 2A to 2E), the caster yoke 112 is for construction of a set of wheeled caster assemblies (as depicted in, for example, FIGS. 1A, 1B and 1C). The set of wheeled caster assemblies includes (and is not limited to) the first wheeled caster assembly 300 of FIG. 1A, the second wheeled caster assembly 400 of FIG. 1B, and the third wheeled caster assembly 500 of FIG. 1C. Each wheeled caster assembly shares the caster yoke 112 and each member of the set of wheeled caster assemblies has a unique functional capability relative to each other member of the set. The caster yoke 112 includes mounting features (such as, a first mounting feature 101, a second mounting feature 102 and a third mounting feature 103, etc.). The mounting features of the caster yoke 112 are each configured to fit (selectively connect, selectively interface, couple, etc.), and any equivalent thereof, with respective caster components of the wheeled caster assemblies 300, 400, 500 as depicted in FIGS. 1A, 1B, and 1C, respectively, which belong to the set of wheeled caster assemblies.

Referring to the embodiment depicted in FIG. 3B, a first mounting feature 101 of the caster yoke 112 is configured to selectively mount a first caster component 301 of the first wheeled caster assembly 300.

Referring to the embodiment depicted in FIG. 4B, a second mounting feature 102 of the caster yoke 112 is spaced apart from the first mounting feature 101. The second mounting feature 102 is configured to selectively mount a second caster component 402 of the second wheeled caster assembly 400.

Referring to the embodiment depicted in FIG. 5B, a third mounting feature 103 of the caster yoke 112 is spaced apart from the first mounting feature 101 and is also spaced apart from the second mounting feature 102. The third mounting feature 103 is configured to selectively mount a third caster component 503 of the third wheeled caster assembly 500.

Referring to the embodiments depicted in FIGS. 2A to 2E (in general terms), each of the mounting features 101 to 111 of the caster yoke 112 is configured to selectively fit (interface, receive, interact) with a selected component of any one of the wheeled caster assemblies 300, 400, 500 (depicted in FIGS. 1A, 1B, and 1C, respectively).

Specifically, the caster yoke 112 includes (provides) mounting features that are spaced apart from each other. The mounting features of caster yoke 112 include (and are not limited to): a first mounting feature 101, a second mounting feature 102, a third mounting feature 103, a fourth mounting feature 104, a fifth mounting feature 105, a sixth mounting feature 106, a seventh mounting feature 107, an eighth mounting feature 108, a ninth mounting feature 109, a tenth mounting feature 110, and an eleventh mounting feature 111.

It will be appreciated that the first mounting feature 101 may be utilized by any one of the wheeled caster assemblies (as depicted in FIGS. 1A, 1B and 1C). The first mounting feature 101 is configured to selectively mount a component of the first wheeled caster assembly 300 (as depicted in FIG. 3B). For instance, the first mounting feature 101 includes a post (also called a pin extension, a protuberance, etc.), and any equivalent thereof, extending from the caster yoke 112. The first mounting feature 101 extends across opposite sidewalls of the caster yoke 112.

It will be appreciated that the second mounting feature 102 may be utilized by any one of the wheeled caster assemblies (as depicted in FIGS. 1A, 1B and 1C). The second mounting feature 102 is configured to selectively mount a component of the first wheeled caster assembly 300 (FIG. 3B). The second mounting feature 102 is configured to selectively mount a component of the second wheeled caster assembly 400 (FIG. 4B). For instance, the second mounting feature 102 includes a hole (a shaped void), and any equivalent thereof, defined on (formed in) opposite lateral sidewalls of the caster yoke 112 at a lower section of the caster yoke 112. The second mounting feature 102 is configured to receive a pin (a rod, a pin extension, etc.), and any equivalent thereof, provided by the component of any one of the first wheeled caster assembly 300 (FIG. 3A) or the second wheeled caster assembly 400 (FIG. 4A).

It will be appreciated that the third mounting feature 103 may be utilized by any one of the wheeled caster assemblies (as depicted in FIGS. 1A, 1B and 1C). The third mounting feature 103 is configured to selectively mount a component of the first wheeled caster assembly 300 (FIG. 3C). The third mounting feature 103 is configured to selectively mount a component of the second wheeled caster assembly 400 (FIG. 4B). The third mounting feature 103 is configured to selectively mount a component of the third wheeled caster assembly 500 (FIG. 5B). For instance, the third mounting feature 103 includes a slot, and any equivalent thereof, defined by (formed in) the caster yoke 112 (at a front portion of the caster yoke 112). The third mounting feature 103 is positioned at a frontal section of the caster yoke 112.

It will be appreciated that the fourth mounting feature 104 may be utilized by any one of the wheeled caster assemblies (as depicted in FIGS. 1A, 1B and 1C). The fourth mounting feature 104 is configured to selectively mount a component of the first wheeled caster assembly 300 (FIG. 3B). For instance, the fourth mounting feature 104 includes a hole, and any equivalent thereof, defined by (formed in) the caster yoke 112. The fourth mounting feature 104 is formed on opposite sidewalls of the caster yoke 112 in a middle zone of the caster yoke 112. The fourth mounting feature 104 extends across opposite lateral sidewalls of the caster yoke 112. The fourth mounting feature 104 is configured to receive a pin (rod, pin extension), and any equivalent thereof.

It will be appreciated that the fifth mounting feature 105 may be utilized by any one of the wheeled caster assemblies (as depicted in FIGS. 1A, 1B and 1C). The fifth mounting feature 105 is configured to selectively mount a component of the first wheeled caster assembly 300 (FIG. 3B). For instance, the fifth mounting feature 105 includes a hole, and any equivalent thereof, defined by (formed in) the caster yoke 112 (at a middle zone of the caster yoke 112). The fifth mounting feature 105 extends between opposite lateral sides (the opposite lateral sidewalls) of the caster yoke 112. The fifth mounting feature 105 is configured to receive a pin (a rod), and any equivalent thereof.

It will be appreciated that the sixth mounting feature 106 may be utilized by any one of the wheeled caster assemblies (as depicted in FIGS. 1A, 1B and 1C). The sixth mounting feature 106 is configured to selectively mount a component of the first wheeled caster assembly 300 (FIG. 3C). For instance, the sixth mounting feature 106 includes a post, and any equivalent thereof, extending from the opposite lateral sidewalls of the caster yoke 112 at a frontal portion of the caster yoke 112.

It will be appreciated that the seventh mounting feature 107 may be utilized by any one of the wheeled caster assemblies (as depicted in FIGS. 1A, 1B and 1C). The seventh mounting feature 107 is configured to selectively mount a component of the first wheeled caster assembly 300 (FIG. 3C). For instance, the seventh mounting feature 107 includes an elongated slot, and any equivalent thereof, defined by (formed in) the caster yoke 112. The seventh mounting feature 107 is defined along an arched portion along a top section of the caster yoke 112. The seventh mounting feature 107 is configured to receive a pin (a rod, a pin extension), and any equivalent thereof. The seventh mounting feature 107 is located above the sixth mounting feature 106.

It will be appreciated that the eighth mounting feature 108 may be utilized by any one of the wheeled caster assemblies (as depicted in FIGS. 1A, 1B and 1C). The eighth mounting feature 108 is configured to selectively mount a component of the first wheeled caster assembly 300 (FIG. 3C). For instance, the eighth mounting feature 108 includes a hole, and any equivalent thereof, defined by (formed in) the caster yoke 112. The eighth mounting feature 108 is located along a bottom rear section of the caster yoke 112 on the opposite sidewalls thereof. The eighth mounting feature 108 is configured to receive a pin (a rod, a pin extension), and any equivalent thereof. The eighth mounting feature 108 is located rearward of the fourth mounting feature 104 along a lower rear zone of the caster yoke 112.

It will be appreciated that the ninth mounting feature 109 may be utilized by any one of the wheeled caster assemblies (as depicted in FIGS. 1A, 1B and 1C). The ninth mounting feature 109 is configured to selectively mount a component of the first wheeled caster assembly 300 (FIG. 3C). The ninth mounting feature 109 is configured to selectively mount a component of the second wheeled caster assembly 400 (FIG. 4B). For instance, the ninth mounting feature 109 includes a slot, and any equivalent thereof, defined by (formed in) the caster yoke 112. The ninth mounting feature 109 is located between a pair of posts extending from a lower rear section of the caster yoke 112. The ninth mounting feature 109 is located behind the fourth mounting feature 104 along a lower rear zone of the caster yoke 112.

It will be appreciated that the tenth mounting feature 110 may be utilized by any one of the wheeled caster assemblies (as depicted in FIGS. 1A, 1B and 1C). The tenth mounting feature 110 is configured to selectively mount a component of the first wheeled caster assembly 300 (FIG. 3D). For instance, the tenth mounting feature 110 includes a notch, and any equivalent thereof, defined by (formed in) the caster yoke 112. The tenth mounting feature 110 is provided at a lower frontal section of the caster yoke 112. The tenth mounting feature 110 is located below the sixth mounting feature 106 along a lower edge of the caster yoke 112.

It will be appreciated that the eleventh mounting feature 111 may be utilized by any one of the wheeled caster assemblies (as depicted in FIGS. 1A, 1B and 1C). The eleventh mounting feature 111 is configured to selectively mount a component of the first wheeled caster assembly 300 (FIG. 3D). The eleventh mounting feature 111 is configured to selectively mount a component of the second wheeled caster assembly 400 (FIG. 4B). The eleventh mounting feature 111 is configured to selectively mount a component of the third wheeled caster assembly 500 (FIG. 5B). For instance, the eleventh mounting feature 111 includes a cavity, and any equivalent thereof, defined by (formed in) the caster yoke 112. The eleventh mounting feature 111 is defined at a rear lower section of the caster yoke 112. The eleventh mounting feature 111 is located above the ninth mounting feature 109.

FIGS. 3A to 3D depict views of embodiments of the first wheeled caster assembly 300 of FIG. 1A. The first wheeled caster assembly 300 includes the caster yoke 112 of any one of FIGS. 2A, 2B, 2C, 2D and 2E. FIG. 3A depicts an exploded view. FIG. 3B depicts a side view. FIG. 3C depicts a frontal perspective view. FIG. 3D depicts a rear perspective view.

The first wheeled caster assembly 300 includes a first caster component 301 (as depicted in FIGS. 3A and 3B). The caster yoke 112 includes the first mounting feature 101 (as depicted in FIGS. 2A, 2B, 2C, 2D, and 3B) configured to selectively mount the first caster component 301 of the first wheeled caster assembly 300.

In accordance with an embodiment, the components of the first wheeled caster assembly 300 further include the first caster component 301, a second caster component 302, a third caster component 303 (such as, a wheel or a pair of wheels), a fourth caster component 304, a fifth caster component 305, a sixth caster component 306, a seventh caster component 307, an eighth caster component 308, a ninth caster component 309, a tenth caster component 310, an eleventh caster component 311, a twelfth caster component 312, a thirteenth caster component 313, a fourteenth caster component 314, a fifteenth caster component 315, a sixteenth caster component 316, a seventeenth caster component 317, an eighteenth caster component 318, a nineteenth caster component 319, a twentieth caster component 320, a twenty-first caster component 321, a twenty-second caster component 322, a twenty-third caster component 323, a twenty-fourth caster component 324, a twenty-fifth caster component 325, a twenty-sixth caster component 326, a twenty-seventh caster component 327, and a twenty-eighth caster component 328.

For instance, the first caster component 301 may include a main-cam pin. The first caster component 301 is configured to selectively mount the first mounting feature 101 of the caster yoke 112. For instance, the second caster component 302 may include a top plate assembly. For instance, the third caster component 303 may include a wheel assembly. The fourth caster component 304 may include a trim cover assembly. The fourth caster component 304 is configured to selectively mount the eleventh mounting feature 111 of the caster yoke 112. For instance, the fifth caster component 305 may include a bushing assembly. For instance, the sixth caster component 306 may include a flanged-bushing assembly (for the eighth caster component 308). For instance, the seventh caster component 307 may include a brake-arm pin. For instance, the eighth caster component 308 may include a brake-arm assembly. The eighth caster component 308 is configured to selectively mount the tenth mounting feature 110 of the caster yoke 112. The ninth caster component 309 may include a pin assembly. The ninth caster component 309 is configured to selectively mount the fifth mounting feature 105 of the caster yoke 112. The tenth caster component 310 includes a flanged bushing. The eleventh caster component 311 includes a main cam. The eleventh caster component 311 is configured to selectively mount the fifth mounting feature 105 of the caster yoke 112. The twelfth caster component 312 may include a center-locking cam. The thirteenth caster component 313 includes a brake cam. The fourteenth caster component 314 may include a center-lock bushing. The fifteenth caster component 315 includes a center-locking pin. The fifteenth caster component 315 is configured to selectively mount the eighth mounting feature 108 of the caster yoke 112. The sixteenth caster component 316 may include a center-locking spring. The seventeenth caster component 317 includes a torsion spring. The eighteenth caster component 318 may include a brake-system frame. The eighteenth caster component 318 is configured to selectively mount the fourth mounting feature 104 of the caster yoke 112. The nineteenth caster component 319 may include a push cam. The twentieth caster component 320 includes a push-cam spring. The twenty-first caster component 321 may include a push-cam pin. The twenty-second caster component 322 may include a brake pedal. The twenty-second caster component 322 is configured to selectively mount the seventh mounting feature 107 of the caster yoke 112. The twenty-third caster component 323 includes a connector (a bolt). The twenty-fourth caster component 324 includes a washer. The twenty-fifth caster component 325 may include a locating washer. The twenty-sixth caster component 326 my include a bearing assembly. The twenty-seventh caster component 327 may include a retainer (retaining ring). The twenty-eighth caster component 328 may include a center-lock bracket.

FIGS. 4A and 4B depict views of embodiments of the second wheeled caster assembly 400 of FIG. 1B. The second wheeled caster assembly 400 also includes the caster yoke 112 of any one of FIGS. 2A, 2B, 2C, 2D and 2E. FIG. 4A depicts an exploded view. FIG. 4B depicts a side view.

The second wheeled caster assembly 400 includes a second caster component 402 (as depicted in FIGS. 4A and 4B). The caster yoke 112 includes the second mounting feature 102 (as depicted in FIGS. 2A, 2B, 2C, 2D and 4B) spaced apart from the first mounting feature 101. The second mounting feature 102 is configured to selectively mount the second caster component 402 of the second wheeled caster assembly 400.

The components of the second wheeled caster assembly 400 further include a first caster component 401, a second caster component 402, a third caster component 403, a fourth caster component 404, a fifth caster component 405, a sixth caster component 406, a seventh caster component 407, an eighth caster component 408, a ninth caster component 409, a tenth caster component 410, an eleventh caster component 411, a twelfth caster component 412, and a thirteenth caster component 413.

The first caster component 401 may include a stem assembly. The second caster component 402 may include a spring pin assembly. The second caster component 402 is configured to selectively mount the second mounting feature 102 of the caster yoke 112. The second caster component 402 is configured to selectively mount the ninth mounting feature 109 of the caster yoke 112. The third caster component 403 may include a cover assembly. The third caster component 403 is configured to selectively mount the eleventh mounting feature 111 of the caster yoke 112. The fourth caster component 404 may include a bearing assembly. The fifth caster component 405 includes a wheel assembly. The sixth caster component 406 may include a lever assembly. The seventh caster component 407 includes a bushing assembly. The eighth caster component 408 may include a retaining ring. The ninth caster component 409 may include a brake arm. The tenth caster component 410 includes a nut. The eleventh caster component 411 may include a washer. The twelfth caster component 412 includes a set screw. The thirteenth caster component 413 may include a spring assembly.

FIGS. 5A and 5B depict views of embodiments of the third wheeled caster assembly 500 of FIG. 1C. The third wheeled caster assembly 500 includes the caster yoke 112 of any one of FIGS. 2A, 2B, 2C, 2D and 2E. FIG. 5A depicts an exploded view. FIG. 5B depicts a side view.

The third wheeled caster assembly 500 includes a third caster component 503 (as depicted in FIGS. 5A and 5B). The caster yoke 112 may include the third mounting feature 103 (as depicted in FIGS. 2A, 2C, 2D and 5B) spaced apart from the first mounting feature 101 and from the second mounting feature 102. The third mounting feature 103 is configured to selectively mount the third caster component 503 of the third wheeled caster assembly 500.

The components of the third wheeled caster assembly 500 further includes a first caster component 501, a second caster component 502, a third caster component 503, a fourth caster component 504, a fifth caster component 505, a sixth caster component 506, a seventh caster component 507, an eighth caster component 508, a ninth caster component 509, a tenth caster component 510, and an eleventh caster component 511.

The first caster component 501 may include a post assembly. The second caster component 502 may include a wheel assembly. The third caster component 503 may include a cover assembly. The third caster component 503 is configured to selectively mount the third mounting feature 103 of the caster yoke 112. The third mounting feature 103 is configured to selectively fit with and to selectively mount a selected component of any one of the wheeled caster assemblies 300, 400, 500. The fourth caster component 504 may include a set screw. The fifth caster component 505 may include a washer. The sixth caster component 506 may include a nut. The seventh caster component 507 may include a set screw. The eighth caster component 508 may include a brake arm.

The ninth caster component 509 may include a bushing assembly. The tenth caster component 510 may include a retaining ring. The eleventh caster component 511 may include a set screw.

This written description uses examples to disclose the invention, including the best mode, and also to enable any person skilled in the art to make and use the invention. The patentable scope of the invention is defined by the claims, and may include other examples that occur to those skilled in the art. Such other examples are within the scope of the claims if they have structural elements that do not differ from the literal language of the claims, or if they include equivalent structural elements with insubstantial differences from the literal language of the claims.

It may be appreciated that the assemblies, components, and modules described above may be connected with each other as required to perform desired functions and tasks within the scope of persons of skill in the art to make such combinations and permutations without having to describe each and every one in explicit terms. There is no particular assembly or component that may be superior to any of the equivalents available to the person skilled in art. There is no particular mode of practicing the disclosed subject matter that is superior to others, so long as the functions may be performed. It is believed that all the crucial aspects of the disclosed subject matter have been provided in this document. It is understood that the scope of the present invention is limited to the scope provided by the independent claim(s), and it is also understood that the scope of the present invention is not limited to: (i) the dependent claims, (ii) the detailed description of the non-limiting embodiments, (iii) the summary, (iv) the abstract, and/or (v) the description provided outside of this document (that is, outside of the instant application as filed, as prosecuted, and/or as granted). It is understood, for this document, that the phrase “includes” is equivalent to the word “comprising.” The foregoing has outlined the non-limiting embodiments (examples). The description is made for particular non-limiting embodiments (examples). It is understood that the non-limiting embodiments are merely illustrative as examples. 

I claim:
 1. A caster yoke for use in the manufacture of a set of wheeled caster assemblies, with each wheeled caster assembly of the set of wheeled caster assemblies having unique functional capabilities relative to each other wheeled caster assembly of the set, such unique functional capabilities arising from a respective configuration of one or more caster components mounted on the caster yoke, the caster yoke having all of the mounting features necessary to selectively mount all of the caster components of the set of wheeled caster assemblies on the caster yoke.
 2. A caster yoke for use in the manufacture of a set of wheeled caster assemblies having a first wheeled caster assembly including a first caster component, a second wheeled caster assembly including a second caster component, and a third wheeled caster assembly including a third caster component, the first wheeled caster assembly, the second wheeled caster assembly, and the third wheeled caster assembly each having a unique functional capabilities relative to each other, the caster yoke comprising: a first mounting feature configured to selectively mount the first caster component of the first wheeled caster assembly; a second mounting feature spaced apart from the first mounting feature, with the second mounting feature being configured to selectively mount the second caster component of the second wheeled caster assembly; and a third mounting feature spaced apart from the first mounting feature and from the second mounting feature, with the third mounting feature configured to selectively mount the third caster component of the third wheeled caster assembly.
 3. The caster yoke of claim 2, wherein the caster yoke forms a unitary body.
 4. The caster yoke of claim 2, wherein the caster yoke is a common element for each member of a set of wheeled assemblies having the first wheeled caster assembly, the second wheeled caster assembly, and the third wheeled caster assembly.
 5. The caster yoke of claim 2, wherein each mounting feature of the caster yoke is configured to selectively mount a selected component of any one of the first wheeled caster assembly, the second wheeled caster assembly, and the third wheeled caster assembly.
 6. The caster yoke of claim 2, wherein the caster yoke includes mounting features spaced apart from each other, with the mounting features including: the first mounting feature; the second mounting feature; the third mounting feature; a fourth mounting feature; a fifth mounting feature; a sixth mounting feature; a seventh mounting feature; an eighth mounting feature; a ninth mounting feature; a tenth mounting feature; and an eleventh mounting feature.
 7. The caster yoke of claim 2, wherein the first mounting feature includes a post extending from the caster yoke, and the first mounting feature extending across opposite sidewalls of the caster yoke.
 8. The caster yoke of claim 2, wherein the second mounting feature includes a hole defined on opposite lateral sidewalls of the caster yoke at a lower section of the caster yoke, and the second mounting feature is configured to receive a pin provided by a component of any one of the first wheeled caster assembly, the second wheeled caster assembly, and the third wheeled caster assembly.
 9. The caster yoke of claim 2, wherein the third mounting feature includes a slot defined by the caster yoke at a front portion of the caster yoke, and the third mounting feature being positioned at a frontal section of the caster yoke.
 10. The caster yoke of claim 2, wherein the caster yoke includes a fourth mounting feature including a hole defined by the caster yoke, the fourth mounting feature is formed on opposite sidewalls of the caster yoke in a middle zone of the caster yoke, the fourth mounting feature extends across opposite lateral sidewalls of the caster yoke, and the fourth mounting feature is configured to receive a pin.
 11. The caster yoke of claim 2, wherein the caster yoke includes a fifth mounting feature including a hole defined by the caster yoke at a middle zone of the caster yoke, the fifth mounting feature extends between opposite lateral sides of the caster yoke, and the fifth mounting feature is configured to receive a pin.
 12. The caster yoke of claim 2, wherein the caster yoke includes a sixth mounting feature having a post extending from opposite lateral sidewalls of the caster yoke at a frontal portion of the caster yoke.
 13. The caster yoke of claim 2, wherein the caster yoke includes a seventh mounting feature having an elongated slot defined by the caster yoke, the seventh mounting feature is defined along an arched portion along a top section of the caster yoke, and the seventh mounting feature is configured to receive a pin.
 14. The caster yoke of claim 2, wherein the caster yoke includes an eighth mounting feature having a hole defined by the caster yoke, the eighth mounting feature being located along a bottom rear section of the caster yoke on opposite sidewalls thereof, and the eighth mounting feature being configured to receive a pin.
 15. The caster yoke of claim 2, wherein the caster yoke includes a ninth mounting feature having a slot defined by the caster yoke, and the ninth mounting feature being located between a pair of posts extending from a lower rear section of the caster yoke.
 16. The caster yoke of claim 2, wherein the caster yoke includes a tenth mounting feature having a notch defined by the caster yoke, the tenth mounting feature being provided at a lower frontal section of the caster yoke.
 17. The caster yoke of claim 2, wherein the caster yoke includes an eleventh mounting feature having a cavity defined by the caster yoke, and the eleventh mounting feature being defined at a rear lower section of the caster yoke.
 18. A set of wheeled caster assemblies, comprising: a caster yoke including a first mounting feature, a second mounting feature spaced apart from the first mounting feature, and a third mounting feature spaced apart from the first mounting feature and from the second mounting feature; a first wheeled caster assembly including a first caster component configured to selectively mount the first mounting feature of the caster yoke; a second wheeled caster assembly including a second caster component configured to selectively mount the second mounting feature of the caster yoke; and a third wheeled caster assembly including a third caster component configured to selectively mount the third mounting feature of the caster yoke; and the first wheeled caster assembly, the second wheeled caster assembly, and the third wheeled caster assembly each have a unique functional capability relative to each other. 